46results about How to "The test environment is stable" patented technology

The invention relates to a pitch mixed material cracking resistance tester which is used for solving the problem of test detection of pitch mixed materials and comprises an environmental box, a fixed support seat, a sticking platform plate, a slide plate, a slide plate displacement loading mechanism, a spoke type sensor, a rotating coupling and a servo motor, wherein the fixed support seat is installed in the environmental box; the sticking platform plate is installed on the fixed support seat and touches and is connected with the slide plate in a movable fit way; the bottom of the slide plate is connected with the slide plate displacement loading mechanism; the slide plate displacement loading mechanism is connected with the servo motor by the rotating coupling, and the spoke type sensoris connected to a coupling disk of the rotating coupling; a side support seat of which the bearing is embedded into the environmental box is installed on the rotating coupling; and the servo motor isconnected outside the side body of the environmental box. The invention has simple structure and simple and convenient use and is suitable for carrying out a cracking resistance test on various pitchmixed materials.

The invention discloses a test method based on a pipelined constant temperature and humidity room. The test method comprises the following steps that (1) safety confirmation is performed before start-up; (2) a test room is preheated; (3) material loading is performed; a product to be tested is arranged on the multilayer frame of the pipelined constant temperature and humidity room and pushed to a conveying belt to be fixed; (4) material feeding is performed; an inlet channel door is opened to form a material feeding channel, and an air curtain is also started to prevent loss of heat and moisture in the test room; and the power component of the pipelined constant temperature and humidity room is started to feed the multilayer frame to a second constant temperature and humidity test room and then the inlet channel door is closed; (5) testing is performed; constant temperature and humidity testing is performed according to the test requirements, and fluctuation and uniformity of temperature and humidity are observed; and (6) material discharging is performed; an outlet channel door is started to form a material discharging channel after completion of testing, and the air curtain is also started to prevent loss of heat and moisture in the test room; and the power component is started to move the product to be tested out of the test room and then the outlet channel door is closed.

The invention discloses a both-foot gait simulation and plantar pressure simulation system and using method. The system comprises a mechanical structure system, a driving system, a sensing system, a control system, a machine-environment interaction system and a man-machine interaction system, wherein the mechanical structure system achieves gait simulation and plantar pressure reproduction, the driving system is the device providing power for the mechanical structure system so that a mechanical execution unit can move according to the expected requirement, the sensing system is composed of an internal sensor and an external sensor, obtains pressure, position and torque information of the internal and external environments and timely feeds the information back to the control system, the control system controls the mechanical execution unit to complete regular movement according to an operation instruction and the signals fed back by the sensing system, the machine-environment interaction system achieves connection and coordination of machines and equipment in the external environment, and the man-machine interaction system achieves connection of a man and machines and control over involved machines. The system can accurately achieve real-time and true reproduction of human gaits and plantar pressure, and can also set the stride and the stride frequency.

The invention discloses a test device for an automotive air conditioner air outlet assembly. The test device for the automotive air conditioner air outlet assembly comprises a wind supply assembly, aheating box, a detection box and a circulation pipeline. An air inlet is formed in one side of the air supply assembly, and the air inlet is provided with an air blower; an air outlet is formed in theother side of the air supply assembly, the air outlet communicates with a heating box air inlet, a heating box air outlet is formed in the other side of the heating box, and the heating box air outlet communicates with a detection box air inlet; and the detection box is internally provided with a test platform communicating with the detection box air inlet, and the detection box is provided withan openable door panel, a control panel is arranged on one side of the detection box, and the detection box is internally provided with a refrigeration component. The test device for the automotive air conditioner air outlet assembly has complete functions and can perform air outlet test under high temperature, normal temperature and low temperature states, has a good fixing effect on an automotive air conditioner air outlet, and has high adaptability, a stable test environment and good test results.

The invention provides a PTC (positive temperature coefficient) core material with positive temperature coefficient characteristics and a preparation method and an application thereof. The PTC core material is used for an over-current protection element and formed by composition of two metallic foil electrodes and polymer positive temperature coefficient conductive materials sandwiched between the two metallic foil electrodes, the polymer positive temperature coefficient materials are formed by composition of at least following materials as components, by volume percentage, 25.5%-29.5% of high polymer, 60%-72% of conductive filler, 0.05%-5% of peroxide crosslinker and 0.5%-10% of coupler, and the conductive filler, the peroxide crosslinker and the coupler are uniformly distributed in the high polymer. The PTC core material is small in resistance change, quite stable in high-and-low cycle life and environmental test, high in efficiency and low in cost, R100 / R0 is only 2-9 times, current characteristics of the over-current protection element are improved, and disadvantages of proneness to degradation, generation of internal stress and the like caused by radiation crosslinking are avoided.

The invention discloses a quick pressure-bonding detection device for an optical chip, which comprises a lower casing fixed with a lower PCB board; a chip carrier mounted on the top surface of the lower casing and evenly placing chips; a chip temperature control mechanism arranged in the lower casing and the lower PCB board Electrical connection; the upper cover is located above the lower shell and one end is hinged with the lower shell, and a locking mechanism is arranged between the upper cover and the lower shell; the floating positioning plate is installed on the bottom surface of the upper cover, the upper PCB board is fixed on the bottom surface, and the bottom surface is installed with a spring The probe; the optical power detection mechanism is installed on the bottom surface of the upper PCB board; the connector is arranged on one side of the lower casing to be electrically connected to the lower PCB board. When the upper cover of the present invention is closed, the chip is powered on, and the optical power detection mechanism detects the optical power of the chip at the same time, which improves the test efficiency and reduces the cost; the floating positioning plate is floatingly installed to adapt to different chips, and the spring probe is used to effectively ensure that the chip is pressed tightly , to avoid poor contact and uneven heat dissipation; only need to control the upper cover to realize the pressing and electrification of the chip, which helps to achieve standardized testing.

The present disclosure discloses an automatic filter testing device and a testing method. By setting an automatic loading and unloading device, errors in test parameters or indicators caused by manual operations can be effectively avoided, and physical flaws caused by manual operations can be avoided. , set the automatic calibration parts in the test fixture, improve the automatic test accuracy of the filter, realize the de-embedding at different temperatures, and minimize the external error factors in the high and low temperature test process of the filter; the automatic loading and unloading device Set in the high and low temperature test chamber, it solves the problem of test efficiency in the process of high and low temperature testing, and reduces labor costs, reducing a lot of time consumed by clamping, and automatic feeding can automatically identify and directly remove unqualified filters Placed separately to realize automated detection and screening.